Machine for operating upon hides, skins, leather, and other similar pieces of work



Oct. 9, 1928. 1,686,769

' G. A. SCHETTLER ET AL MACHINE FOR OPERATING UPON HIDES, SKINS, LEATHER,

AND OTHER SIMILAR PIECES OF WORK Filed Sept. 8, 1926 Fig.1

IN'VE NTO'R s Patented Oct. 9 .1928.

UNITED STATES. PATENTEOFFICE.

eosrava sonn'r'rnnn, or LnnDsnNGLANn, AND OSKAR norrennfor FRANKFORT-Q' oN-rHn- Am, GERMANY, nssrenons TO THE TURNER TANNING MACHINERY COMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

MACHINE non OPERATING. UPON HIDES, SKINS, LEATHER, AND OTHER SIMILAR i PIECES or WORK. 7 f

Application filed September 8, 1926, Serial No. 134,192, and in Germany October 30, 1925;

as to be freely rotatable upon its supporting shaft, the arrangement being such that the operator directly controlled the feeding of the work. ercise of very considerablev skill onthe part of the operator and involved also much labori-' ous efi ort in attempting tosecure uniformity in shaving operations upon all the various portions of the Work;

It'is an object of the invention to provide an improved shaving machine which will make less demands on both the'strength and the skill of the operator while enabling him to secure better and more uniform quality of work,

To this end and in accordance with important features of the invention,there is provided in the illustrated machine power driven means under the control of the operator for feeding the work to the work treating tool .wherein a single manually controlled member permits theoperator to control directly the 5 movementsof a work feeding roll'between work receiving and work presenting positions and to control alsothe application of power to drive the roll at a uniform rate while it is in work presenting position, whereby the 4 feeding of the'work is accomplished uni-' formly without laborious effort onthe part of the operator. In the illustrated construction, connections are provided whereby a trea= dle mechanism is utilized to cause movement of the roll between work receiving andwork presenting positions and to effect disconnec-- tion of the driving means for the roll after it has moved away from the work treating,

tool and to reconnect the driving means before the rollagain reaches work. presenting position with respect to thetreating tool.

This'construction required the eX-.

The advantage of this arrangement resides in the fact that the operator, is assisted in feed- 'ing thework at a uniform rate even While it is being retracted from the tool and also while being moved into contact with the tool, thus reducing to a minimum the danger of injury T to'the work during the described movements to itsdriving means are effected through the of the roll. Preferablyand as shown, connec- I operation of frictional contacting members" controlled by the treadle so; that the power driving means for the roll-is thrown into and out of operation in timed relation to the movements of the work support when shifting between. work receiving and work presenting positions. As shown, the frictionalcontacting member in the roll drivingm'eans comprises a wheel having a frictional peripheral surface arranged to co-operate with. a

frictionface on a disk the axis of the disk I being at a right angle to the axis of the wheel.

Another important feature of the invention resides in the provision,in the organization shown, of improved means for changing the speed of the work supporting and presenting roll to suitthe skill and convenience of the operator 1n shaving operations upon hides andskins and to enable him to vary the speed in accordance with the thickness of the'layer V.

to be shaved from the piece of work. Conven- 'iently this adjustment is secured in the illustrated. construction by relative movement be tween thewheel and the disk which form the frictional driving connection "for the work supporting and work presenting roll. By this arrangement a great. variety of adjustments may be securedsuited to the skill of each individual operator andwithout 'aifectingthe control of the driving means for the roll or the extent of movement of the treadle utilized in effecting both the application of power to the roll and the bodily movements of the roll between work receiving and work presenting positions. These and other features of the invention will be described i a detail in the specification and pointed out in the appended claims.

In the drawings,

Fig. 1 is a v1ew,1n side elevation and partly in section, of a shaving machine illustrating a preferred embodiment of the invention; and

Fig. 2 is a detail view showing the frictional criving means for the work feeding roll. Y

i on power shaft 20. It will be understood that the power shaft 20 may be driven from any suitable source of power.

For supporting hides, skins or other work and presenting it to the bladed cylinder 10 there is provided a roll 22 secured to a shaft 24 mounted in the upper ends of two lever arms,.one of which is shown at. 26. (Fig..

1) both lever arms being pivoted upon a trans verse shaft shown at 28. For moving the roll 22 toward the bladed cylinder 10 there is provided a treadle 30 having connections with the lovers 26 comprising a link 32 pivotally'connected to the lower end of one of the levers 26, the said slink being connected at its other end by a pivot to an upwardly extending arm 34 rigid with the treadle 80. Forreturning the treadle 3O to'initial position there is provided, in the construction shown a spring 36 interposed between the treadle and the base of the machine.

Means is provided for causing rotation of the roll 22 in the direction of the arrow in Fig. l whereby the work is fed into the machine while it is being. operated upon by the bladed cylinder 10. In the illustrated construction this driving means for the roll 22 comprises a sprocket 40 secured to the shaft ed in a bearing 54 in the machine frame.

Means-is provided for driving the shaft 52 through frictionally engaging members, the construction having advantages-which. will be hereinafter pointed out. As shown, the driving means for the shaft 52 comprises a shaft 60 arranged in axial alinement with theshafl 52 in bearings 62 in the machine frame.- Secured to the forward end of the shaft 60 is a sleeve 64 having a bore sli'dably to receive the rear end portion of the shaft 52, the adjacent ends of thetwo shafts 52 and 60 being normally spaced from each other. In order that the shaft '52 maybe driven from the shaft. 60 the sleeve 64 is provided witha groove to receive a key 66 secured to theshaft Keyed to thjc sha'ft 60 adjacent to its rear end for sliding movement thereon is a disk 70, the shaft 60 having a collar 72 (Fig In the illustratedshaving machine there is located on and secured to the main shaft 20 of the machine. Secured to one end of the shaft 80 is a driving wheel 90'hav1ng a fr1ction-surfaced member 92 adapted to contact.

with a friction surface on the disk to drive the'latter. It will be readily understood that the two frictionally contacting nieinbers 70, 90 provide a friction clutch which may be caused to engage or disengage promptly and safely at any point 'llltlle operation on the work and lnrpredetermmed time relation to'the movement of the work I feeding roll 22into and out. of co-operative" relation with respect to the cylinder 10. By reason of the spacing between the ends ofthe shafts 52 and 60 theicompression teng sion on the spring 74 may be gradually increased as the work is pressed more firmly by the roil 22 against the cylinder 10, thereby insuring proper driving of the roll 22 through the friction clutch as the pressure on the work increases. There is thus provided a. simple movements of the work supporting and feeding roll 22 so that the latter continues to rotate. while the work is in contact withthe cylinder 10, as will be hereinafter described.

Preferably, and as shown, the driving wheel adjustable toward andfrom the center of the disk 70tovary the speed of rotation of the disk 70 and therefore of the shafts 60 and 52. The means for moving the driving wheel 90 in its adjustment with respect to the disks 70 comprises a slidable ,mounting for the block 82 which isdovetailed I upon a pro ection 94 extendmg from a porand inexpensive clutch device which has the advantage of being regulatable to the bodlly tion of the frame l4-of the machine. Passing I through the block 82 is a threadedspindle 96 provided witha hand wheel 98 so that. upon rotation of the spindle 96 the block 82 and the parts carried thereby are moved in a direction axially of the shaft 80 whereby the wheel 90 is moved toward or from the center ofthe disk 70. It will be understood that adjustment of the wheel 90 with respect to the disk 70 will take placewhile the disk 70 is out of contact with the wheel and that thisv adjustment of the disk and wheel relative 1y to each other provides for aregulation of the speed of the disk designed to secure within limits a very wide variation in the speed of the disk, thus providing for adjustment of the speed to suit the skill and requirements of any operator.

For moving the shaft axially to causecontact of the disk with the wheel there is provided a connection between the shaft 60 and the treadle 30 so that upon depressing the treadle to move the feeding roll 22 to present the work to the bladed cylinder power is also transmit-ted to rotate the feeding "roll 22. In the-construction shown, this connecting means between the shaft 60 and the treadle 80 comprises a ring mounted in a groove in the sleeve 64 (so that the latt-ermay rotate in the ring) and having bosses (not shown) for connection with a forked eXten-' sion 102 of the leverar1n- 34; of the treadle 30. Upon depressing the treadle 30 the shaft 60 is caused to move endwise within its bearings 62 to presst-he disk 70 yieldingly against the wheel 90 whereby power-is communicated from the main shaft 20 to the shaft 60. ,Upon inspection of Fig. 1 it will be observed that;

even a slight movement of' retraction of the roll 22 will carry the work away from'the cylinder l0while the roll 22 is being driven due to the fact that the disk 70 isstill pressed by spring'T l-against the wheel 90. It will be observed also that depression ofthe treadlo 30 causes the work supporting and feeding roll 22 to move toward the bladed cylinder 10 to present the workthereon to the said cylinder, the parts being so arranged that'before the work is pressed against the bladed "cylinder 10, the roll22 is power driven by'the driving means ust described so that feeding of the'work will befacilitated from the very beginning ofthe shaving operations, 'Like wise the roll 22 mov s-away from work presenting posit-ion with respect to the cylinder 10 before thefeed of the roll is discontinued. The arrangement described reduces to a minimum the danger of injury to the worksince 7 the latter is not allowed to remain stationary while injcontact with the bladed cylinder 10. In operating with the machine illustrated in the drawings a piece of cwork'such as a calf skin is placed over the feeding --roll20 with the forward end portion of the work resting upon the curved surface of the roll 22 opposite to the-:surface' of the bladed cyl-' in'der 10. Upon stepping on the treadl e 30 the feed roll 22 moves toward the bladed cylinder 10, the roll starting its feeding rotation before the work contacts with the bladed cylinder. During the engagement "of the bladed cylinder with the work backed by the feeding roll 22 the work is fed downwardly between the roller and cylinder while the bladed cylinder operates atrelatively high speed to shave the portions of the work pre' sented during the feedingin ofthe work. As soon'as one pert-ionof thework has been operated upon. the operator releases the treadle 30 in order to shift the work laterally and to retract it, thereby presenting a new portion of the work-tothe operation of the cylinder 10. Should it'bed'esired to change manually operable means the speed of the feeding roll 22 tosecure a more rapid or a. less rapid feeding in of the work, proper manipulation of the hand wheel 98 maybe carried out whereby the wheel 90" is movedtoward or away from the periphery of the disk 70.

Having described our invention, what we claim as new and desire tosecure byLetters Patent of the United States is z- I e 1. In a'machine for operating on hides, skins, leather, and other like pieces of work, a tool for operating on 'a piece of work,'work supporting and feeding means movable be .tween work receiving and work presenting positions relatively to the tool, power means for operating said means to feed the work,

and manually operable means constructed and arranged to enable the operator to control directly the bodily movement of the 2; In a machine, for operating on hides,

skins, leatl'1er,"and other like pieces of WQlk, a tool for operating on a piece of work, a'roll movable between work receivlng and work presenting positions relatively to the tool,

power means for driving the roll, and treadle means constructed and arranged to enable the operator to control directly the bodily movement of the roll between work receiving and work presenting positions and also to control connection and disconnection of the roll with respect to its power driving means,

said treadle means having a direct connection with said power means.

3. In a" machine for operating on'hides,

skins, leather, and other like pieces of work,

Y a toolforoperating on a piece of work, av roll movable'between work receiving'and work present ing po'sitions relatively to the tool, power means for driving the roll, means under the control of the'o-perator for effecting bodily movement of the roll between workreceiving and work presenting positions,iand a direct connection between'the ,operator-controlled'means and said power means for causing connection and disconnection of the roll with respect to its power driving means in timed relation to the recited movements-of translation of the roll.

4. In a machine for operating upon hides,

skins,- leather, and other like pieces of work, a

rotary tool, a roll for supporting and presenting work to the tool, means for supporting'theroll for movement toward and'from' p the tool, power means for driving the roll 1 to feed the work pastthe tool, and manually.-

operable means for moving the roll'to work presenting posltlonand for causing discon nection of the roll with respect to its power driving means after the roll starts-its movement toward work receiving position.

5. In a machine for operating upon hides, skins, leather, and other like pieces of work, a rotary shaving tool, a roll for supporting and presenting work to the tool, means for supporting the roll for movement toward and from the tool, power means for driving the roll to feed the work past the tool, and manually operable means for causing bodily movement of the roll between work receiving and work presenting positions and also for effecting operation of the power means for driving the roll before the latter reaches work presenting position and disconmotion of the power means fromthe roll after the latter starts its movement toward work receiving. position. i

6. In a machine for operating upon hides, skins, leather, and other like pieces of work, a rotary tool, a roll for supporting and presenting work to the tool, means for supporting the'roll for movement'toward and from the tool, power means for driving the roll to feed the work past the tool, and manually operable means for moving the roll to. work presenting position and for-causing operation of the power means for driving the roll before the latter reaches work presenting position. a f

7. In a machine for operating upon hides, skins, leather,-and other like pieces of work, a rotary shaving tool, a roll for supporting and presenting work to the tool, means for tion of the power means for driving'the rollbeforev the latter reaches work presenting position, and disconnection of thepower means-from the roll before the latter reaches work receiving position.

8. In a shaving machine, a rotary bladed cylinder for performing shaving operations upon a piece of leather, a roll for supporting and presenting a piece of leather to the bladed 7 cylinder, said roll being bodily movable between work receiving and work present in positions, power means under the control of the operator for driving the roll at a uniform rate to feed the work past the cylinder, a. treadle for causing bodily movement of V the roll between work receiving and work presenting positions said power means comprising'a friction clutch, and a connection between the treadle and the clutch arranged to increase the driving friction of the clutch ,9. Ina machine for operating upon hides,

to the recited movements ofrtranslation of the roll. v

10. In a machine'for operating upon hides, skins, leather, and other like pieces of work, a rotary tool, a roll for supporting and presenting apiece of leather to the tool, said roll being bodily movable between work receiv ing and work presenting positions, power vmeans for driving the roll, said means comprising a friction clutch, and manually controllable means for causing bodily movement of the roll between work receivingand work presenting positions and for throwing in' the friction clutch to effect operation of the power means for driving the roll in timed relation to the recited movements oftranslation of the roll.

11. In a machine for operating upon hides,

skins, leather, and other like pieces of Work,

a tool for operating on a piece of leather, work supporting and feeding means bodily mova-, ble between work receiving and work presenting positions, power means for operating said means to feed the work at a uniform'ra te comprising a clutch, and a 'treadle for causing bodily movement of the work supporting and feeding means between the recited positionsand operation of the clutch to effect driving of theroll in timed relation to the describedmovements of translation of the work sup porting and feeding means.

12. In a shaving machine, a rotary bladed cylinder for operating on a piee of leather, a roll for supporting a piece of leather for the action of the-bladed cylinder, said roll being bodily movablebetween work receiving and workpresenting positions, power means for driving the roll at a uniform rate comprising a clutch, and a treadle for'oausing movement of the roll between the recited positions and operation of the clutch to effect driving of the roll while in work presenting position.

13. In a shaving machine, a rotary bladed cylinder for operating on a piece of leather,

a roll for supporting a piece of leather for the action of the bladed cylinder, said roll being bodilyvmo'vable'bet-ween work receiving and work presenting positions, power means for driving the roll comprising a clutch, and a treadle for causing movement of the roll into work presenting position and operation of the clutch to effect driving of the roll prior to the completion of its movement into work presenting pos1t1on. j

14;. In a shaving machine, a rotary cylinder for operating on apiece of leather,

a roll for supporting the piece of leather for operation on the cylinder, power means for driving the roll while the latter is in work presentmg'positlon, said 'means comprlsing a clutch, means underthe control of the opera-' tor for moving the roll to work receivmg pos1- cylinder for operating on a piece of leather,

a roll for supporting the piece of leather for operation on the cylinder, power means for driving the roll while the latter is in work presenting position, said means comprising a clutch, means under the control ofv the operator for moving the roll to work receiving position and for throwing in the clutch to effect rotation of the roll, and manually operable means for adjusting the clutch to vary the speed of the roll. 7

16. Ina shaving machine, a rotary bladed cylinder for operating'on a piece of leather, a roll for supporting the piece of leather for operation by the cylinder, power means for driving the roll while the latter is in work presenting position, said means comprising a friction clutch, means under the control of. the operator for moving the roll to work re-' ceiving position and for throwing in the clutch to effect rotation of the roll, and means for adjusting the clutch to vary the speed of the roll. 1

17 In a shaving machine, a rotary bladed cylinder for operating on a piece'ofleather, a roll for supporting a piece of leatherfor the operation ofthe cylinder, said roll being movable between work. receiving andwork.

periphery of the wheel, a shaft arrangedto.

be driven by the disk, and a treadle having connections with the roll and with the shaft to move the latter aXially,whereby operat on of the treadle causes the roll to move to work presenting'position and the disk to moveinto contact with the wheel thereby effecting power operation of-the roll in timed relation.

to the movements of the translation of tne roll. 1

18. In a shaving machine, a rotary bladed cyllnder for operating on a piece ofleather, a

ing position with respect to the bladed cyiin- (ler, the manually operable member having a connection withone of the clutch parts, and the construct onand' arrangement belng such that operative movement of themanually operable member causes engagement of the clutch parts before the roll'reaches work precylinder.

19. In a shaving machine, a rotary bladed cylinder for operating on apiece of leather,

aroll for supporting the piece ofleather for "the operation of the cylinder, power means for driving the roll to feedthe piece of leather past the cylinder, said means comprising a two-part friction'clutch, a treadle for moving the roll'to work presenting position with re-- spect to the bladed cylinder, said power means comprising anaXi-ally movable shaft arranged to operate one of the clutch parts and to transmit power from the clutch, and a connection between the treadle and theaxiallymovable shaft to cause relative movement between the clutch parts to initiate rotation ofthe roll before it reaches work presenting position with respect to the bladed cylinder.

.senting position with respect to the bladed [20. In-ashaving machine, a rotary bladed cylinder for operating on a pieceof leather, a roll for supporting the piece of leather for the operationof the cylinder, power means for driving. the roll to feed the piece of leather past, the cylinder, said means comprising a friction clutch consisting of a wheel having a friction surface onits periphery and a disk having a face for contact with the, periphery of the, wheel, said power means comprising also an axially movable shaft arranged to carry the disk and to press it-yieldingly against the wheel upon movement of the shaft in one direction, a treadle for moving the roll to work presenting position with respect to the cylinder, and a connection between the treadle and the axiallv movable shaft to operate the latterin timed relation to the work presenting movement of the roll.

21. In a shaving machine, a rotary bladed cylinder for operating on apiece of'leather, a roll for supporting the piece of leather for the operation of the cylinder, power means for driving the roll to feedthe piece of 7 leather past the cylinder, said means comprising a friction clutch, consisting of a wheel having a friction surface on its periphery and a disk having a face for contact with the periphery of the wheel, said power means comprising also an axiallymovable shaft arranged to carry the disk andprovided with spring means to press the disk yieldingly v against the wheel upon movement of the shaft in one direction, a treadle for moving theroll to work presenting position with respect to the cylinder, and connections between the treadle and both the roll and the shaft to move the roll and shaft simultaneously,

the arrangementbeing such that the greater greater the yielding pressure of the disk against the Wheel."

' 22. In a shaving machine, a rotary bladed cylin'der'i or operating on a piece of leather, power means for rotating the cylinder, a roll for supporting and feeding the piece of leather for operation by the cylinder, power means for driving the roll While the latter is in Work presenting position, said means comprising a friction clutch, and means under the control of the operator ior throwlng-the clutch out or 111 to efiect rotation of the roll,

the construction and-arrangement being such that the driving of the roll may be discontinued at anydesired point in theroperation ona piece of leather. In testimony Where of I, the said GUSTAV A. SGI-IETTLER, have signed my name to this a specification. v V 1 V GUSTAV ADOLPH SCH-ETTLER.

In testimony whereof]; the said OsKAR Bo'rtrenn have signed niy'naine to thlsspeci- 

